package j01meiju;

public class J1 {
    public static void main(String[] args) {
        String direction="top";
        switch (direction){
            case "top":
                break;
            //没有及时报错，没有语法提示
            case "bottom1":
                break;
            case "left":
                break;
            case "right":
                break;
        }
    }
}
